In this discussion, environmental economist Anna Papp highlights her research on the efficacy of plastic bag bans, revealing significant reductions in shore litter post-regulation. Meanwhile, Daniel Clery shares insights from his visit to the groundbreaking Vera C. Rubin Observatory, which will take snapshots of the southern sky every three days, enhancing our study of dark energy and astronomical events. Together, they explore the intersection of environmental policy and cutting-edge astronomy, sparking fascinating conversations about our planet and universe.